1 files changed, 1 insertions, 1 deletions
diff --git a/gui/application.cc b/gui/application.cc
index 7751e6f1..8c3db77b 100644
--- a/gui/application.cc
+++ b/gui/application.cc
@@ -53,7 +53,7 @@ bool Application::notify(QObject *receiver, QEvent *event)
     bool retVal = true;
     try {
         retVal = QApplication::notify(receiver, event);
-    } catch (assertion_failure ex) {
+    } catch (const assertion_failure &ex) {
         QString msg;
         QTextStream out(&msg);
         out << ex.filename.c_str() << " at " << ex.line << "\n";